B A S I N   S U M M A R Y  O F  
                       S N O W    C O U R S E    D A T A

                                  February 1997

     SNOW COURSE         ELEVATION    DATE    SNOW   WATER     LAST   AVERAGE
                                             DEPTH  CONTENT    YEAR   1961-90
--------------------------------------------------------------------------------

  SNAKE RIVER BASIN                                                    
     ASTER CREEK            7750    1/29/97   115     38.4     29.7     20.0
     BASE CAMP PILLOW       7030    2/01/97   ---     23.8     17.3     12.5
     BASE CAMP        (d)   7030    1/30/97    77     24.0     19.5     13.9
     BLACK BEAR PILLOW      7950    2/01/97   ---     48.9     32.1     24.5
     BLIND BULL PILLOW      8900    2/01/97   ---     33.4     26.3     19.0
     BRYAN FLAT             6420    1/31/97    46     13.3      7.2      6.3
     CCC CAMP               7000    1/27/97    57     14.6     11.7      8.3
     COTTONWOOD CR PILLOW   7700    2/01/97   ---     23.3     23.3     14.0
     DARBY CANYON           8250    2/04/97    85     27.4     19.7     15.4
     EAST RIM DIV PILLOW    7930    2/01/97   ---     13.8     11.1      9.3
     ELBO RANCH             7100    1/31/97    54     14.8      8.2      8.1
     FOUR MILE MEADOWS      7860    1/30/97    47     13.4     11.6      8.9
     GLADE CREEK            7040    1/29/97    88     27.2     19.1     15.6
     GRASSY LAKE PILLOW     7270    2/01/97   ---     37.2     24.2     23.0
     GREYS BOUNDARY         5720    1/27/97    62     15.8      8.9      7.9
     GROS VENTRE PILLOW     8750    2/01/97   ---     17.9     13.6     10.6
     GROVER PARK DIVIDE     7000    1/27/97    43     10.8      8.9      7.9
     HUCKLEBERRY DIVIDE     7300    1/29/97    78     23.0     18.5     14.4
     JACKPINE CREEK         7350    2/04/97    80     24.3     13.1     14.6
     LEWIS LAKE PILLOW      7850    2/01/97   ---     44.9     31.9     22.8
     MORAN                  6750    1/30/97    55     15.9     11.0      9.3
     PHILLIPS BENCH PILL.   8200    2/01/97   ---     32.8     22.4     19.4
     SALT RIVER PILLOW      7600    2/01/97   ---     18.3     12.8      9.0
     SNAKE RIVER STATION    6920    1/29/97    77     22.0     16.6     14.0
     SPRING CRK. PILLOW     9000    2/01/97   ---     30.0     27.0     18.2
     THUMB DIVIDE           7980    1/29/97    78     24.6     17.6     13.5
     TOGWOTEE PASS PILLOW   9580    2/01/97   ---     27.4     24.1     16.9
     TURPIN MEADOWS         6900    1/30/97    48     13.4      9.9      7.6
     TWO OCEAN PILLOW       9240    2/01/97   ---     35.7     28.5     18.3
     WILLOW CREEK PILLOW    8450    2/01/97   ---     33.3     25.4     21.0

  UPPER YELLOWSTONE & MADISON RIVER BASINS                             
     BLACK BEAR PILLOW      7950    2/01/97   ---     48.9     32.1     24.5
     CANYON PILLOW          8090    2/01/97   ---     19.0     14.4      8.3
     FISHER CREEK PILLOW    9100    2/01/97   ---     43.8     33.4     24.2
     LAKE CAMP              7780    2/01/97    56     14.4     10.1      6.1
     MADISON PLT PILLOW     7750    2/01/97   ---     31.9     19.4     16.1
     NORRIS BASIN           7500    1/31/97    41     11.9      9.8      8.0
     N.E. ENTRANCE PILLOW   7350    2/01/97   ---      9.3      8.2      6.4
     NORTHEAST ENTRANCE     7350    2/01/97    45     11.8      9.0      6.5
     OLD FAITHFUL           7400    1/29/97    63     19.4     13.6     10.8
     PARKERS PEAK PILLOW    9400    2/01/97   ---     24.5     19.3     14.3
     SYLVAN LAKE PILLOW     8420    2/01/97   ---     24.8     19.8     14.9
     THUMB DIVIDE           7980    1/29/97    78     24.6     17.6     13.5
     TWENTY-ONE MILE        7150    1/30/97    66     20.6     12.6     11.7
     TWO OCEAN PILLOW       9240    2/01/97   ---     35.7     28.5     18.3
     WEST YELL'ST PILLOW    6700    1/30/97   ---     10.1      4.3      6.1
     WEST YELLOWSTONE       6700    1/30/97    46     12.5      6.6      7.8

  WIND RIVER BASIN                                                     
     BLUE RIDGE             9620    1/28/97    50     13.4      8.9      7.9
     BURROUGHS CRK PILLOW   8750    2/01/97   ---     20.0     15.5     10.4
     CASTLE CREEK           8400    1/27/97    27      5.7      5.3      3.0
     CHRISTINA LK PILLOW    9980    2/01/97   ---     17.4      9.4     10.2
     COLD SPRINGS PILLOW    9630    2/01/97   ---      8.0      6.7      5.8
     DU NOIR                8760    1/30/97    40     11.0      6.9      5.7
     GEYSER CREEK           8500    1/30/97    30      7.9      6.2      4.8
     GRANNIER MEADOWS       8860    1/28/97    58     14.5     12.0      9.4
     HOBBS PARK PILLOW     10100    2/01/97   ---     13.7     13.2     10.0
     LITTLE WARM PILLOW     9370    2/01/97   ---     13.9     11.8      7.2
     MIDDLE FORK            7420    1/28/97    14      3.2      4.0      3.8
     SOUTH PASS PILLOW      9040    2/01/97   ---     22.5     14.8     11.3
     ST LAWRENCE ALT PILL   8620    2/01/97   ---      6.0      5.1      4.8
     T CROSS RANCH          7900    1/27/97    46     10.8      8.2      5.3
     TOGWOTEE PASS PILLOW   9580    2/01/97   ---     27.4     24.1     16.9
     TOWNSEND CRK PILLOW    8700    2/01/97   ---      8.0      8.1      6.2
     YOUNTS PEAK PILLOW     8350    2/01/97   ---     18.5     18.4     12.2

  BIG HORN RIVER BASIN                                                 
     BALD MOUNTAIN PILLOW   9380    2/01/97   ---     15.3     13.4     13.8
     BONE SPGS. PILLOW      9350    2/01/97   ---     13.1     12.9     10.6
     KIRWIN PILLOW          9550    2/01/97   ---     12.4     13.1      6.6
     LOST CREEK PILLOW      8080    2/01/97   ---     10.6      5.4      8.1
     MEDICINE LODGE LAKES   9340    1/28/97    39      9.2      8.4      7.7
     MIDDLE POWDER PILLOW   7760    2/01/97   ---     11.2      6.4      7.8
     ONION GULCH            8780    1/29/97    31      6.0      4.4      5.8
     OWL CREEK PILLOW       8980    2/01/97   ---      5.4      3.4      2.8
     POWDER RVR.PASS PILL   9480    2/01/97   ---      9.2      9.8      7.0
     RANGER CREEK           8120    1/28/97    34      7.3      7.0      6.4
     SHELL CREEK PILLOW     9580    2/01/97   ---     12.5     13.0     10.2
     TIMBER CREEK PILLOW    7950    2/01/97   ---      4.3      3.3      3.6
     TYRELL RANGER STA.     8300    1/29/97    26      4.4      5.2      5.5

  SHOSHONE & CLARKS FORK RIVER BASINS                                  
     BEARTOOTH LK. PILLOW   9280    2/01/97   ---     27.9     24.0     16.0
     BLACKWATER PILLOW      9780    2/01/97   ---     29.9     24.5     14.0
     CARTER MOUNTAIN        7950    1/29/97    16      4.2      4.6      3.1
     FISHER CREEK PILLOW    9100    2/01/97   ---     43.8     33.4     24.2
     EVENING STAR PILLOW    9200    2/01/97   ---     32.3     29.9     17.8
     MARQUETTE PILLOW       8760    2/01/97   ---      7.5      8.7      5.1
     PARKERS PEAK PILLOW    9400    2/01/97   ---     24.5     19.3     14.3
     N.E. ENTRANCE PILLOW   7350    2/01/97   ---      9.3      8.2      6.4
     NORTHEAST ENTRANCE     7350    2/01/97    45     11.8      9.0      6.5
     PARKERS PEAK PILLOW    9400    2/01/97   ---     24.5     19.3     14.3
     SYLVAN ROAD PILLOW     7120    2/01/97   ---     16.5     12.3      8.5
     WHITE MILL PILLOW      8700    2/01/97   ---     30.1     24.6     16.8
     WOLVERINE PILLOW       7650    2/01/97   ---     12.0     12.3      7.9
     YOUNTS PEAK PILLOW     8350    2/01/97   ---     18.5     18.4     12.2

  POWDER & TONGUE RIVER BASINS                                         
     BEAR TRAP PILLOW       8200    2/01/97   ---      5.7      4.0      4.8
     BIG GOOSE              7760    1/28/97    25      5.3      3.5      4.3
     BONE SPGS. PILLOW      9350    2/01/97   ---     13.1     12.9     10.6
     BURGESS JCT. PILLOW    7880    2/01/97   ---      9.0      7.2      7.6
     CLOUD PEAK PILLOW      9850    2/01/97   ---     13.1     11.9      8.0
     DOME LAKE PILLOW       8880    2/01/97   ---      9.0      9.1      9.0
     HANSEN S.M. PILLOW     8360    2/01/97   ---      5.0      5.0      4.6
     LOST CREEK PILLOW      8080    2/01/97   ---     10.6      5.4      8.1
     MIDDLE POWDER PILLOW   7760    2/01/97   ---     11.2      6.4      7.8
     NORTH TONGUE           8450    1/28/97    43     10.7      9.9      8.3
     ONION GULCH            8780    1/29/97    31      6.0      4.4      5.8
     POWDER RVR.PASS PILL   9480    2/01/97   ---      9.2      9.8      7.0
     SAWMILL DIVIDE         9260    1/28/97    45     11.4     11.1      9.0
     SOLDIER PARK           8780    1/29/97    23      3.4      4.8      3.7
     SOUR DOUGH             8460    1/29/97    25      4.7       --      4.3
     SUCKER CREEK PILLOW    8880    2/01/97   ---     10.1      8.0      7.5
     WOOD ROCK G.S.         8440    1/28/97    38      8.9      7.5      6.6

  BELLE FOURCHE & CHEYENNE RIVER BASINS                                
     BEARLODGE DIVIDE       4680    1/30/97    10      3.2      1.8      1.9
     BLIND PARK PILLOW      6870    2/01/97   ---      7.8      5.7      7.2
     DITCH CREEK            6870    1/28/97    16      3.6      4.1    999.9
     NORTH RAPID CK PILL.   6130    2/01/97   ---      8.5       --    999.9
     MALLO                  6420    1/31/97    33      9.2      5.4      5.2
     MOUNT TOM              5560    1/30/97    26      7.0      3.8      3.0
     REUTER CANYON          6280    1/30/97    51     17.0      7.8      6.5
     UPPER SPEARFISH        6500    1/28/97    30      9.8      5.6      4.5
     WARREN PEAK PILLOW     6520    2/01/97   ---     13.6      6.8      7.2
     LITTLE BEAR RUN        6240    1/28/97    18      4.2      3.6    999.9

  UPPER NORTH PLATTE BASIN                                             
     DIVIDE PEAK PILLOW     8860    2/01/97   ---     18.8     13.8     13.3
     JOE WRIGHT SNOTEL     10000    2/01/97   ---     18.6     19.9     14.0
     MOSS LAKE              9800    1/27/97    65     21.3     15.4     16.0
     NORTH BARRETT CREEK    9400    1/27/97    66     21.2     14.1     13.5
     NORTH FRENCH PILLOW   10130    2/01/97   ---     26.0     21.2     16.0
     OLD BATTLE PILLOW      9920    2/01/97   ---     33.4     22.2     20.5
     PURGATORY GULCH        8970    1/27/97    54     16.4     11.0      6.8
     ROACH SNOTEL           9400    2/01/97   ---     16.8     13.6     11.0
     RYAN PARK              8400    1/27/97    43     11.9      6.6      7.4
     SAND LAKE PILLOW      10050    2/01/97   ---     28.0     23.0     21.2
     SOUTH BRUSH PILLOW     8440    2/01/97   ---     12.4      6.5      7.1
     WEBBER SPRING PILLOW   9250    2/01/97   ---     25.1     19.4     17.4
     WILLOW CK PS SNOTEL    9500    2/01/97   ---     14.5      9.8      7.3

  LOWER NORTH PLATTE, SWEETWATER & LARAMIE RIVER BASINS                
     ALBANY                 9400    1/31/97    46     13.0     10.5      9.9
     BOXELDER               7280    1/30/97    17      5.2      4.8      4.3
     BROOKLYN LK. PILLOW   10220    2/01/97   ---     26.3     19.4     16.0
     BUCK CREEK             7960    1/30/97    37     11.4      8.2      5.9
     CASPER MTN. PILLOW     7850    2/01/97   ---     14.4      9.1      9.4
     CHRISTINA LK PILLOW    9980    2/01/97   ---     17.4      9.4     10.2
     DEADMAN HILL SNOTEL   10200    2/01/97   ---     12.3     16.8     11.1
     DEADMAN HILL          10200    1/30/97    45     12.6       --       --
     FOXPARK                9060    1/31/97    31      8.1      5.6      4.8
     GRANNIER MEADOWS       8860    1/28/97    58     14.5     12.0      9.4
     HAIRPIN TURN           9480    1/31/97    56     17.8     13.8     11.2
     JOE WRIGHT SNOTEL     10000    2/01/97   ---     18.6     19.9     14.0
     LA PRELE PILLOW        8380    2/01/97   ---     11.5      9.0      6.6
     LARSEN CREEK           9020    1/27/97    62     16.2     10.6      8.5
     LIBBY LODGE            8750    1/31/97    42     12.4      9.4      7.8
     POLE MOUNTAIN          8700    1/30/97    30      7.7      4.4      5.3
     RENO HILL PILLOW       8500    2/01/97   ---     15.9     11.4      8.3
     ROACH SNOTEL           9400    2/01/97   ---     16.8     13.6     11.0
     SOUTH PASS PILLOW      9040    2/01/97   ---     22.5     14.8     11.3
     WINDY PEAK PILLOW      7900    2/01/97   ---      7.7      6.0      4.5

  LITTLE SNAKE RIVER BASIN                                             
     BATTLE MTN. PILLOW     7440    2/01/97   ---     13.6      6.6      7.3
     BUTTER HILL            7880    1/28/97    50     14.2       --      9.7
     DIVIDE PEAK PILLOW     8860    2/01/97   ---     18.8     13.8     13.3
     ELK RIVER SNOTEL       8600    2/01/97   ---     21.9     14.5     12.5
     HASKINS CREEK          8980    1/29/97   102     33.0     25.0     20.4
     OLD BATTLE PILLOW      9920    2/01/97   ---     33.4     22.2     20.5
     SANDSTONE PILLOW       8150    2/01/97   ---     16.2     10.8      9.3
     WHISKEY PARK PILLOW    8950    2/01/97   ---     29.6     25.1     18.4

  UPPER GREEN RIVER BASIN                                              
     BIG PARK               8620    1/28/97    73     21.7     18.2     12.6
     BIG SANDY PILLOW       9080    2/01/97   ---     15.9     11.8      9.6
     BLIND BULL PILLOW      8900    2/01/97   ---     33.4     26.3     19.0
     EAST RIM DIV PILLOW    7930    2/01/97   ---     13.8     11.1      9.3
     ELKHART PARK PILLOW    9400    2/01/97   ---     15.5      9.6      8.9
     GROS VENTRE PILLOW     8750    2/01/97   ---     17.9     13.6     10.6
     INDIAN CREEK PILLOW    9430    2/01/97   ---     33.2     25.9     17.9
     KELLEY R.S. PILLOW     8180    2/01/97   ---     20.9     15.1     10.7
     KENDALL R.S. PILLOW    7740    2/01/97   ---     19.7     15.1      9.9
     LOOMIS PARK PILLOW     8240    2/01/97   ---     17.0     17.2     11.6
     NEW FORK PILLOW        8340    2/01/97   ---     12.8     10.7      7.9
     POCKET CREEK           9350    1/27/97    55     15.7      8.9      8.3
     ROWDY CREEK            8300    1/29/97    87     28.8     21.0     15.1
     SNIDER BASIN PILLOW    8060    2/01/97   ---     19.4     17.3      9.9
     TRIPLE PEAK  PILLOW    8500    2/01/97   ---     28.2     27.8     17.4

  LOWER GREEN RIVER BASIN                                              
     BIG PARK               8620    1/28/97    73     21.7     18.2     12.6
     HAMS FORK PILLOW       7840    2/01/97   ---     15.1     11.9      8.1
     HEWINTA SNOTEL         9500    2/01/97   ---     10.0S    10.2      6.2
     HICKERSON PARK SNOTE   9100    2/01/97   ---      5.2S     2.3      3.5
     HOLE-IN-ROCK SNOTEL    9150    2/01/97   ---      6.0S     4.7      3.2
     INDIAN CREEK PILLOW    9430    2/01/97   ---     33.2     25.9     17.9
     KELLEY R.S. PILLOW     8180    2/01/97   ---     20.9     15.1     10.7
     SPRING CRK. PILLOW     9000    2/01/97   ---     30.0     27.0     18.2
     STEEL CREEK PARK SNO  10100    2/01/97   ---     12.3S    13.1      9.8

  UPPER BEAR RIVER BASIN                                               
     BIG PARK               8620    1/28/97    73     21.7     18.2     12.6
     HAYDEN FORK SNOTEL     9100    2/01/97   ---     16.6S    16.0     10.2
     INDIAN CREEK PILLOW    9430    2/01/97   ---     33.2     25.9     17.9
     KELLEY R.S. PILLOW     8180    2/01/97   ---     20.9     15.1     10.7
     SALT RIVER PILLOW      7600    2/01/97   ---     18.3     12.8      9.0
     TRIAL LAKE SNOTEL      9960    2/01/97   ---     30.7S    20.5     15.8

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